Enamelled Cast Iron Cast iron cookware may also be coated with enamel. Enamel protects the surface against rust and strengthens it. In enamelled products food can be prepared in the oven or on the stove with good results every time. Food cooks evenly and browns well. The enamelled surface prevents food flavors from sticking to the pot, so use can use the same pot for cooking fish as well as meat. Use wooden or plastic kitchen utensils. Sharp objects and scouring agents and sponges can damage the enamel. Always wash enamelled cast iron products by hand, with our without washing liquid. Occasionally, it is recommended to treat the enamelled surface with cooking oil.